Raman scattering in optical fibers

Lan, Guey-Liou; Banerjee, Paramita; Mitra, S. S.

doi:10.1002/jrs.1250110521

Cited by 27 publications

(17 citation statements)

References 26 publications

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“…We have found, as did previous workers, 8,9 that Raman spectra arising from the fiber material produced a large background to the signal from the probe. We have found, as did previous workers, 8,9 that Raman spectra arising from the fiber material produced a large background to the signal from the probe.…”

Section: B Armsupporting

confidence: 86%

Clinical probe utilizing surface enhanced Raman scattering

Kim

Hah

Daniels‐Race

et al. 2014

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Conventional Raman scattering is a well-known technique for detecting and identifying complex molecular samples. In surface enhanced Raman scattering, a nanorough metallic surface close to the sample enormously enhances the Raman signal. In previous work, the metallic surface was a thin layer of gold deposited on a rough transparent epoxy substrate. The advantage of the clear substrate was that the Raman signal could be obtained by passing light through the substrate, on to opaque samples simply placed against its surface. In this work, a commercially available Raman spectrometer was coupled to a distant probe. Raman signals were obtained from the surface, and from the interior, of a solid specimen located more than 1 m away from the spectrometer. The practical advantage of this arrangement is that it opens up surface enhanced Raman spectrometry to a clinical environment, with a patient simply sitting or lying near the spectrometer.

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Section: B Armsupporting

confidence: 86%

Clinical probe utilizing surface enhanced Raman scattering

Kim

Hah

Daniels‐Race

et al. 2014

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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“…Raman bands at ∼1000 – 1150 cm −1 have been shown to result from stretching vibrations of the mixed Si-O-Ge bonds and the Si-O bonds 32. The strong feature centered around 1330 cm −1 matches the position of the Raman band resulting from GeO 2 and P 2 O 5 dopant incorporation into silica 32.…”

Section: Sers Measurementsmentioning

confidence: 80%

Optical Antenna Arrays on a Fiber Facet for in Situ Surface-Enhanced Raman Scattering Detection

et al. 2009

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“…There are two types of fused-silica fibers, characterized by their OH-content originating from the manufacturing process, commonly referred to as high-OH and low-OH. The fiber material's inherent, fabrication-induced impurities and defects may lead to undesired fluorescence, additional Raman bands, color-center formation, and photodegradation effects [13,14,15,16]. Stimulated Raman scattering and nonlinear effects become important only for long fibers or higher laser intensities [15].…”

Section: Fiber-optic Lif Detection Of Chmentioning

confidence: 99%

Fuel-rich methane oxidation in a high-pressure flow reactor studied by optical-fiber laser-induced fluorescence, multi-species sampling profile measurements and detailed kinetic simulations

Schwarz

Geske

Goldsmith³

et al. 2014

Combustion and Flame

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A versatile flow-reactor design is presented that permits multi-species profile measurements under industrially relevant temperatures and pressures. The reactor combines a capillary sampling technique with a novel fiber-optic Laser-Induced Fluorescence (LIF) method. The gas sampling provides quantitative analysis of stable species by means of gas chromatography (i.e. CH 4 , O 2 , CO, CO 2 , H 2 O, H 2 , C 2 H 6 , C 2 H 4 ), and the fiber-optic probe enables in situ detection of transient LIF-active species, demonstrated here for CH 2 O. A thorough analysis of the LIF correction terms for the temperature-dependent Boltzmann fraction and collisional quenching are presented. The laminar flow reactor is modeled by solving the two-dimensional Navier-Stokes equations in conjunction with a detailed kinetic mechanism. Experimental and simulated profiles are compared. The experimental profiles provide much needed data for the continued validation of the kinetic mechanism with respect to C 1 and C 2 chemistry; additionally, the results provide mechanistic insight into the reaction network of fuel-rich gas-phase methane oxidation, thus allowing optimization of the industrial process.

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Raman scattering in optical fibers

Cited by 27 publications

References 26 publications

Clinical probe utilizing surface enhanced Raman scattering

Clinical probe utilizing surface enhanced Raman scattering

Optical Antenna Arrays on a Fiber Facet for in Situ Surface-Enhanced Raman Scattering Detection

Fuel-rich methane oxidation in a high-pressure flow reactor studied by optical-fiber laser-induced fluorescence, multi-species sampling profile measurements and detailed kinetic simulations

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